look up any word, like donkey punch:
 
1.
It's BETTER then an orgasm. Over 9000 times better.
Guy 1: Yeah, so I totally nailed that one chick last night.

Guy 2: Ah yeah, I heard, she's a screamer when she orgasms.

Guy 1: Oh, that wasn't a mere orgasm, that was a sexgasm. Most incredible thing I've ever seen.
by Sonic101 August 26, 2009
 
2.
When something is sexually appealing enough to give you an orgasm.
Gerard Way's face is so sexy, i'm having a sexgasm.
by Wonders O The Bedroom November 13, 2011